native-or-another
Guaranteed way for getting a Promise. Always native Promise if available, otherwise looks for common promise libraries and loads which is installed. Allows registering custom Promise implementation in node < 0.12 versions
mongo-gridfs
Uses the native GridFSBucket-Api from the new MongoDB NodeJS Driver and wrap it as Promise-Objects
aveazul
Bluebird drop-in replacement built on native Promise
gridfs-promise
Uses the native GridFSBucket-Api from the new MongoDB NodeJS Driver and wrap it as Promise-Objects